Feed valve



2 Sheets-Shea?f 2 R. R. DUPLER FEED vALvE v o o o o o o o o o Nov. 30, 1948.

Filed Feb. 25, 1946 MVA-wrox? Maffay/gr /f/'wPA/IYS'.

/zpaym Patented Nov. .1948

Fran vALva Raymond a. Duplex, Toledo, ohio; minor to Sun Oil Company, Philadelphia, Pa.,

tion of Newjersey l mn- Application February 25, 1946, Serial No. 650,097

liquid. Additional means are provided for sampling the liquid to determine the amount of dissolved solids therein and hence the rate of solution in order that the positively controlled valve means may be adjusted to obtain the desired results.

liquid under any reasonable amount of pressure.

' chemicals into the liquid without the assistance It is also an important object of this invention to provide a lfeed valve structure comprising a liquid tight body having an end portion for receiving solid dissolvabie material and which may be readily joined to a pipe line containing a liquid in which solids are to be dissolved and means within the body to regulate the area of contact between the solid material contained in the end portion of the valve and the liquid in the pipe.

It is a further object of this invention to provide the solid or crystalline material holding portion of the valve in such a manner as to prevent or reduce the. passage of the solids into the liquid.

As stated the invention relates to a controllable feed valve means for introducing a solid to be dis of solution and prevent the obtaining of a high' concentration of dissolved solids as soon as possible. With the feed valve of this invention the copper sulphate may be placed into contact with the water under pressure in the return pipe line to the cooling tower and the degree of contact may be positively controlled to iix the rate of solution and obtain the desired concentration of dissolved solids as soon as possible. It is a further advantage of this invention that upon opening the feed valve into a pipe line containing a of any remotely controlled repressuring means.

Further objects and advantages will be apparent by., reference to vthe following specification and drawings, in which:

Figure 1 is a longitudinal section of the feed valve installed for operation in a iiuid line.

Figure 2 is a fragmentary elevation showing the manner of securing the valve to a pipe line, which is shown in transverse section.

Figure 3 is an enlarged fragmentary section of a portion of the valve member shown in Figure 1.

Figure 4 is a top elevation showing details of Figure 3.

Figure 5 is a fragmentary elevation similar to Y Figure 2 but showing a modified form of the invention.

Referring to Figure l of the drawings: the feed valve structure is provided with the tubular body member ld which may be adapted to contain a quantity of solid material to be dissolved. The solid material may be placed within the body vlll through the pipe elbow il having a screw threaded filler `cap l2 in order that the chamber within the body l@ may be kept liquid tight. The upper end of the tubular body it is closed by the end plate i3 through which passes the valve rod it. The rod ld is rotatably and slidably journaled in the liquid-tight stuiiing box i5 which is welded to the end plate i3 to thus provide a seal. A cast metal yoke member itis secured to the plate i3 and the hub of the yoke member ld is provided with a threaded bushing il which extends above the yoke member to receive a hand wheel i8. The threaded shaft i9 is received in and cooperates with the bushing l'l, for actuating shaft It and a pin 23 extends transversely through the shaft It to engage a, leg of the yoke member I6 to prevent rotation of the shaft It in such manner that when the hand wheel i8 and bushing l'l are rotated therewith, the shaft i9 is caused to be axially moved in or out of the lbushing l1 in accordance with the direction of rotation of the hand wheel. A nut 20 at the upper end-of the shaft i9 limits the maximum inward movement of the shaft l@ and hence controls the maximum opening of the valve and area'of contact between the solid and "liquid, as will be later described.

nut 22 which permits the shaft I4to be rotated by applying a wrench to the nut 22 without causing rotation of the threaded shaft I8 which as before pointed out is prevented from rotating by the pin '23. Thus the valve operating rod I4 is reciprocated within the body i when the hand wheel I8 is rotated. An indicator 25 is attached to the rod I4 and cooperates with a scale 24 on one of the legs of the yoke member to show the axial position of the valve rod I4 and hence the degree of opening of the valve to be later described.

The rod I4. near its lower end, is rotatably and slidably journaled in a bushing 30 having arms 3| radiating therefrom which are'flxed to the inner wall of member I0 and secured toy the end of the rod I4 at its lower end is a plate 32 shown in detail in Figs` 3 and 4. The plate 32 is disk shaped and is provided with a beveled edge 33 to cooperate with a similar beveled edge 34 formed at the lower end of the tubular member I0. A cylindrical screen 35 of slightly less diameter than the inside diameter of the tubular member i0 is secured to the plate 32 providing with the plate a receptacle for receiving solid crystalline material. The upper edges of the screen 35 are fixed to the rod I4 by braces 33 and a strengthening ring 31 surrounds the upper edge of the screen and additionally provides a sliding and sealing contact with the interior walls of the tubular member I0. The details of'the apparatus just described in effect provide a dispensing valve for the material within the screen member 35 and when the valve is fully open it will assume the position shown by the dotted lines of Figure 1 and thus it will be seen that the cylindrical screen 3B and the sealing ring 31 cooperate with the lower portion of the tubular member I0 to prevent the passage of any solid particles out of the screen which are larger than predetermined size governed by the area of the screen openings. The tubular member I0 is provided with an air vent 33 at its upper end and a drain valve 39 at its lower end.

Referring to Fig. 2 wherein the feed valve is shown installed on a fluid conduit 40: In order to effect the installation the tubular member ill is provided with a laterally extending flange 4I which cooperates with a receiving flange 42'xed to the conduit 40, for example by an upstanding cylindrical flange 43. The anges 4I and 42 may be secured in fixed position by means of bolts 44. With the present device it will be appreciated that the screen 35 containing the crystalline material may be inserted into the conduit 40 to any desired depth and thus a predetermined amount of the crystals may be placed in solution depending on the operating conditions to which the device is subjected.

One mode of operating the mixing valve of this invention 4is las follows: The hand wheel i8 is first turned in a direction to raise the valve rod I4 and bring the beveled edge 33 of the plate 32 into sealing contact with the beveled edge 34 of the tubular member I0 to thus close the valve. The drain valve 39 and vent valve 38 are then opened to dain the iiuid contents of the member I0. Thereafter, the drain valve 39 is closed and the filling cap I2 is removed to permit the granulated solids to be poured into the body I0. The vent 38 is then closed with a plug or other mechanical means not shown and the filling cap I2 replaced after which the hand wheel I8 may be turned in a direction to lower the valve rod and move the screen member 35 towards the dotted line open position of Figure 1. The granulated solids in the body III will .be confined by the basket-like screen 35 which upon entering the stream of liquid under pressure in the pipe line 40 produces a differential pressure. This difierential pressure aids in dissolving the solids in the liquid passing through the openings in the screen 35 regardless oi what the pressure of the liquid may be. The amount of opening for the valve member 32 is indicated by the pointer 25 and scale 24.. By drawing off liquid through the drain valve 39 a sampling of the solution in the dispensing chamber may be made at any time to determine the amount of dissolved solids in the liquid and the advisability of increasing or decreasing the rate of solution by suitably adjusting the position of the screen member 35. Difculty is sometimes encountered when attempting to close the valve due to the accumulation of foreign matter on the beveled surfaces 33 and 34. In order to insure that the valve will be properly closed and sealed it is sometimes advisable to rotate the rod I4 and screen member 30 by applying a wrench to the surface of the nut 22.

The modified form of the invention shown in Fig. 5 of the drawings may be used when the desired solution rate is to be less than that obtained with the valve just described. Since the parts are similar to that Ipreviously described like reference numerals have been used and it will be seen that the lower end of the valve body I0 is constructed to form a valve opening of less diameter than the diameter of .the body. Thus a smaller area of contact between the liquid in the conduit 4I] and the solids in the body I0 is obtained which reduces the maximum rate of solution from that in the previously described structure.

What I claim and desire to protect'by Letters Patent is:

1. A dispensing device for supplying solid material to a body of liquid in a vessel comprising a housing having an open end in communication with said vessel and permitting access to the body of liquid therein, a shaft within said housing, means to move the shaft axially of the housing and a container for material to be discharged aiiixed to said shaft so as to contact the liquid body on the axial movement thereof, said container comprising a lperforated side wall and a solid -piate forming the bottom in support of said wall, said plate providing a valve member for closing said-housing on removal of the container from contact with said liquid.

2. A dispensing device for supplying granular material to a body of liquid in a conduit comprising a `housing having an open end in communication with said conduit and permitting access to the body of liquid therein, a shaft within said housing adapted for reciprocation longitudinally of said housing, a container for material to be dispensed affixed to said shaft so as to be moved through the open end of said housing, said container comprising a reticulated side wall and a solid plate forming the bottom in support of said wall,'said plate providing a valve member for closing and sealing said housing on removal of the container from contact with said liquid, and means on said shaft to indicate visually the receptacle side wall depth which is in contact with the liquid.

3. A dispensing device for admixing crystalline material with a body of liquid in a conduit comprising an elongate tubular housing having an open end in communication with said conduit and permitting access to the body of liquid therein, a shaft within said housing, means at theupper end of said shaft to effect reciprocation of the shaft, a plate at the lower end of said shaft providing a valve member for the open end of said housing, a cylindrical screen secured to 5 said plate and forming therewith a container, said plate being maintained normally in closed position with respect to the open end of said tubular housing and adapted through the reciprocable shaft to be lowered into the flowing body 10 of liquid to dispense the -crystalline material therein, an inlet for supplying crystalline material to the tubular housing for transmission to said container, and means on said shaft to indicate visually the depth of the container side wall 15 in the body of liquid.

RAYMOND R, DUPLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 

